Welcome to the Quiz!

This quiz contains 15 questions from a mix of 1 subtopics.

Organic chemistry is about molecules that contain which element?

Argon

Carbon

Magnesium

Iron

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1

Hydrocarbons only contain which two elements?

Helium

Carbon

Hydrogen

Oxygen

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2

Diagram showing the molecular structure of propane with three carbon atoms and eight hydrogen atoms.

Is the molecule above a hydrocarbon?

Yes

No

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Diagram showing the molecular structure of propanol with carbon, hydrogen, and oxygen atoms.

Is the molecule above a hydrocarbon?

Yes

No

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Diagram showing the molecular structure of propene with carbon and hydrogen atoms.

Is the molecule above a hydrocarbon?

Yes

No

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What is the definition of a homologous series? 

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3

Diagram showing the molecular structures of methane CH4 and ethane C2H6 labelled as A and B respectively.
Diagram showing the molecular structures of alkanes with labels C and D, representing propane and butane.

The names of alkanes always end in 'ane'.


Match the molecules A to D on the diagram above with their names:


Methane:

Butane:

Ethane:

Propane:


A
D
B
C

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4

Which alkane is shown above?

Methane

Ethane

Propane 

Butane

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1

Diagram showing the molecular structure of ethane with two carbon atoms and six hydrogen atoms.

Which alkane is shown above?

Butane

Propane 

Methane

Ethane

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1

Which alkane is shown above?

Methane

Ethane

Propane 

Butane

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1

Structural formula of butane showing carbon and hydrogen atoms.

Which alkane is shown above?

Ethane

Butane

Propane 

Methane

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Each homologous series has its own general formula, which allows you work out how many atoms of each element a molecule will have. 


What is the general formula for alkanes? 


(Remember that 'n' represents the number of carbon atoms)

CnH2n+2

CnHn

CnH2n

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How many hydrogen atoms are there in an alkane with 5 carbon atoms?

12

hydrogen atoms

hydrogen atoms

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An alkane only has single covalent bonds. There are no double bonds or triple bonds.


What is another way to describe hydrocarbons with only single bonds?

Saturated

Lone molecules

Unsaturated

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What is the definition of a hydrocarbon? 

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2